I'm actually pretty fascinated by "unexplained" phenomena like this. It's likely secret military stuff, but who knows?
I think a lot of Freepers just enjoy making fun of stuff that doesn't make sense, and because so often clueless people are the ones "reporting" phenomena (which often indeed are pretty explainable things)....
But who knows? Evidence indicates it's more than a shaky camera, or normal contrails. Muy interesante....
Radio caller identified the X pattern below as "area secured", a V pattern indicates "unsecured".